Action plan 2

[LukasT.dev@gmail.com]

> About week 29: It should be easy to do the changes to the preset chooser. I
> could do that, we just need to decide how it should look like.

Ok, we can allocate new task for. I'm cool with that. You already did great 
job regarding presets, you might be more efficient.
 
> What would the refactoring in week 27 look like? Does it need a week?

I would like to refactor the dialog and start to use it in spray/hairy brush.
I want to make it more modular so that new type of brush masks can be used. 
E.g. softbrush might be separate type of brush mask (but we had discussion 
with Cyrille and he aimed for merging with autobrush) some raster shapes I 
plan to write for spray (so far it is rectange,elipse)

> I think switching masks to grayscale is important. Improving the docker
> system is important too, but that would likely take too long.

What is switching to grayscale? Something like 16-bit depth? Or instead of 
QImage RGB use Grayscale?